A.When the distress alert is sounded
B.When the emergency equipment is switching on
C.When the general emergency alarm is sounded
D.When the distress broadcast is sounded
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A.When
B.Where
C.how
D.that
A.If
B.Whenever
C.Because
D.Where
A.transmit
B.to transmitting
C.transmitting
D.in transmitting
A.strike
B.strikes
C.are striking
D.struck
A.Avoiding
B.To be avoided
C.Avoided
D.To avoid
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COSPAS-SARSAT is intended to be used for（）.
Radiotelephony communication or radio telex communication or both will be carried out by terrestrial or satellite means,（）the equipment fitted on ship and the area in which the incident occurs.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
The priority of EGC messages is classified by（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
The vessel has stayed in port for seven days because she needs（）.
SOLAS ships shall be equipped with（）.